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A Fast and Accurate PCA Based Radiative Transfer Model: Extension to the Broadband Shortwave Region

Kopparla, Pushkar and Natraj, Vijay and Spurr, Robert and Shia, Run-Lie and Crisp, David and Yung, Yuk L. (2016) A Fast and Accurate PCA Based Radiative Transfer Model: Extension to the Broadband Shortwave Region. Journal of Quantitative Spectroscopy and Radiative Transfer, 173 . pp. 65-71. ISSN 0022-4073. doi:10.1016/j.jqsrt.2016.01.014.

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Accurate radiative transfer (RT) calculations are necessary for many earth-atmosphere applications, from remote sensing retrieval to climate modeling. A Principal Component Analysis (PCA)-based spectral binning method has been shown to provide an order of magnitude increase in computational speed while maintaining an overall accuracy of 0.01% (compared to line-by-line calculations) over narrow spectral bands. In this paper, we have extended the PCA method for RT calculations over the entire shortwave region of the spectrum from 0.3 to 3 microns. The region is divided into 33 spectral fields covering all major gas absorption regimes. We find that the RT performance runtimes are shorter by factors between 10-100, while root mean square errors are of order 0.01%.

Item Type:Article
Related URLs:
URLURL TypeDescription
Kopparla, Pushkar0000-0002-8951-3907
Natraj, Vijay0000-0003-3154-9429
Shia, Run-Lie0000-0003-1911-3120
Crisp, David0000-0002-4573-9998
Yung, Yuk L.0000-0002-4263-2562
Additional Information:© 2016 Elsevier B.V. Received 4 August 2015, Revised 4 December 2015, Accepted 10 January 2016, Available online 16 January 2016.
Record Number:CaltechAUTHORS:20160125-084322315
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Official Citation:Pushkar Kopparla, Vijay Natraj, Robert Spurr, Run-Lie Shia, David Crisp, Yuk L. Yung, A fast and accurate PCA based radiative transfer model: Extension to the broadband shortwave region, Journal of Quantitative Spectroscopy and Radiative Transfer, Volume 173, April 2016, Pages 65-71, ISSN 0022-4073, (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:63917
Deposited By: Tony Diaz
Deposited On:25 Jan 2016 17:19
Last Modified:10 Nov 2021 23:23

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